Observations:

Small Bulb: 60 mA

Big Bulb: 190 mA

Weird shaped Bulb: 48 mA

Questions:
1) The circuit with the bigger bulb had the largest current.

2) The circuit with the weird shaped bulb had the smallest current.

3) The purpose of the switch is to start and stop the current so that the battery power wasn’t wasted while we weren’t measuring the amps.

4) The purpose of starting with a higher setting is so that you can get a more precise measurement because that way you will know if you need to move it to a lower setting or not and that way your not changing the setting more than once which can alter your measurement.